I got this recipe off of The Food Network after watching Paula prepare it on her show. It is delicious! Although the original recipe didn't call for cheese, I sometimes add some between the meat and Bisquick layers. Rich and decadent!
Beef Layer: Chop and saute onion in 2 tablespoons butter. Add ground beef. After beef is browned, add tomato sauce; mix in vegetables (except potatoes). Add salt and pepper to taste.
Potato Layer: Peel and slice potatoes about 1/4 inch thick. Cook in boiling water for about 15 minutes, or until potatoes are fork tender. Whip potatoes with electric mixer until moderately smooth - a few lumps are okay. Heat to warm 1/2 cup of the milk and add to potatoes, along with 1/2 cup butter and the sour cream. Add salt and pepper to taste. Whip til mixed, adding a little more milk, if needed, for the desired consistency.
Biscuit Layer: Mix Bisquick and one cup milk. The mixture should be thinner than regular buscuit mix, but not runny.
Spray a 9 by 9 by 2-inch (or similar) baking pan with cooking spray. Layer half-way up with the mashed potatoes. Next, spread the mixed vegetables over the potatoes, then the meat. Pour Bisquick over the meat. Melt 4 tablespoons butter and drizzle over top.
Bake for 35 - 45 minutes until top is golden brown.
If you have leftover pork or beef roast with gravy and vegetables from Sunday dinner, they can be used to make this a quick nd easy mid-week dinner!